Version 62.4 by Xiaoling on 2022/06/30 10:14
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20 **Table of Contents:**
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22 {{toc/}}
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27 (% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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36 = 1.Introduction =
37
38 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
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45 The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
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51 RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
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57 (% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
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63 (% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
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67 (% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
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74 (% aria-label="1653267211009-519.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653267211009-519.png||data-widget="image" height="419" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
75
76
77 == 1.2 Specifications ==
78
79
80 **Hardware System:**
81
82 * STM32L072CZT6 MCU
83 * SX1276/78 Wireless Chip 
84 * Power Consumption (exclude RS485 device):
85 ** Idle: 32mA@12v
86 ** 20dB Transmit: 65mA@12v
87
88 **Interface for Model:**
89
90 * RS485
91 * Power Input 7~~ 24V DC. 
92
93 **LoRa Spec:**
94
95 * Frequency Range:
96 ** Band 1 (HF): 862 ~~ 1020 Mhz
97 ** Band 2 (LF): 410 ~~ 528 Mhz
98 * 168 dB maximum link budget.
99 * +20 dBm - 100 mW constant RF output vs.
100 * +14 dBm high efficiency PA.
101 * Programmable bit rate up to 300 kbps.
102 * High sensitivity: down to -148 dBm.
103 * Bullet-proof front end: IIP3 = -12.5 dBm.
104 * Excellent blocking immunity.
105 * Low RX current of 10.3 mA, 200 nA register retention.
106 * Fully integrated synthesizer with a resolution of 61 Hz.
107 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
108 * Built-in bit synchronizer for clock recovery.
109 * Preamble detection.
110 * 127 dB Dynamic Range RSSI.
111 * Automatic RF Sense and CAD with ultra-fast AFC.
112 * Packet engine up to 256 bytes with CRC
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114
115
116 == 1.3 Features ==
117
118 * LoRaWAN Class A & Class C protocol (default Class C)
119 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
120 * AT Commands to change parameters
121 * Remote configure parameters via LoRa Downlink
122 * Firmware upgradable via program port
123 * Support multiply RS485 devices by flexible rules
124 * Support Modbus protocol
125 * Support Interrupt uplink (Since hardware version v1.2)
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127
128
129 == 1.4 Applications ==
130
131 * Smart Buildings & Home Automation
132 * Logistics and Supply Chain Management
133 * Smart Metering
134 * Smart Agriculture
135 * Smart Cities
136 * Smart Factory
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138
139
140 == 1.5 Firmware Change log ==
141
142 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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144
145 == 1.6 Hardware Change log ==
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150 v1.2: Add External Interrupt Pin.
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154 v1.0: Release
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160
161 = 2. Power ON Device =
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164 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
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166 * Power Source VIN to RS485-LN VIN+
167 * Power Source GND to RS485-LN VIN-
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170 Once there is power, the RS485-LN will be on.
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173 (% aria-label="1653268091319-405.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268091319-405.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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177
178 = 3. Operation Mode =
179
180 == 3.1 How it works? ==
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184 The RS485-LN is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the RS485-LN. It will auto join the network via OTAA.
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189
190 == 3.2 Example to join LoRaWAN network ==
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192 Here shows an example for how to join the TTN V3 Network. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here. 
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194 (% aria-label="1653268155545-638.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268155545-638.png||data-widget="image" height="334" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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199 The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below:
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203 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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206 (% aria-label="1653268227651-549.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268227651-549.png||data-widget="image" height="592" width="720"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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210 The LG308 is already set to connect to [[TTN V3 network >>path:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
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214 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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218 Each RS485-LN is shipped with a sticker with unique device EUI:
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222 (% aria-label="1652953462722-299.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953462722-299.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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227 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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231 **Add APP EUI in the application.**
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235 (% aria-label="image-20220519174512-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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237 (% aria-label="image-20220519174512-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-2.png||data-widget="image" height="323" width="720"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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239 (% aria-label="image-20220519174512-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-3.png||data-widget="image" height="556" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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241 (% aria-label="image-20220519174512-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-4.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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243 You can also choose to create the device manually.
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245 (% aria-label="1652953542269-423.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953542269-423.png||data-widget="image" height="710" width="723"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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249 **Add APP KEY and DEV EUI**
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251 (% aria-label="1652953553383-907.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953553383-907.png||data-widget="image" height="514" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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255 (% style="color:blue" %)**Step 2**(%%): Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
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258 (% aria-label="1652953568895-172.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953568895-172.png||data-widget="image" height="232" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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260
261 == 3.3 Configure Commands to read data ==
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263 (((
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266 There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-LNviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
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272 (% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1
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278
279 === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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281 To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
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283 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
284 |=(% style="width: 110px;" %)(((
285 **AT Commands**
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287 **Description**
288 )))|=(% style="width: 190px;" %)(((
289 **Example**
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292 AT+BAUDR
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294 Set the baud rate (for RS485 connection). Default Value is: 9600.
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297 AT+BAUDR=9600
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301 Options: (1200,2400,4800,14400,19200,115200)
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305 AT+PARITY
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307 Set UART parity (for RS485 connection)
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310 AT+PARITY=0
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314 Option: 0: no parity, 1: odd parity, 2: even parity
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318 AT+STOPBIT
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321 Set serial stopbit (for RS485 connection)
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329 AT+STOPBIT=0 for 1bit
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333 AT+STOPBIT=1 for 1.5 bit
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337 AT+STOPBIT=2 for 2 bits
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342
343 === 3.3.2 Configure sensors ===
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347 Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won’t run during each sampling.
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351 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
352 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
353 |AT+CFGDEV|(% style="width:110px" %)(((
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355 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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359 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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363 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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365 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
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367
368 === 3.3.3 Configure read commands for each sampling ===
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370 (((
371 During each sampling, we need confirm what commands we need to send to the RS485 sensors to read data. After the RS485 sensors send back the value, it normally include some bytes and we only need a few from them for a shorten payload.
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373 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
374
375 This section describes how to achieve above goals.
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377 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
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379
380 (% style="color:#037691" %)**Each RS485 commands include two parts:**
381
382 ~1. What commands RS485-LN will send to the RS485 sensors. There are total 15 commands from **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF**. All commands are of same grammar.
383
384 2. How to get wanted value the from RS485 sensors returns from by 1). There are total 15 AT Commands to handle the return, commands are **AT+DATACUT1**,**AT+DATACUT2**,…, **AT+DATACUTF** corresponding to the commands from 1). All commands are of same grammar.
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386 3. Some RS485 device might has longer delay on reply, so user can use AT+CMDDL to set the timeout for getting reply after the RS485 command is sent. For example **AT+CMDDL1=1000** to send the open time to 1000ms
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388
389 After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
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391 Below are examples for the how above AT Commands works.
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393
394 (% style="color:#037691" %)**AT+COMMANDx **(%%)**: **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
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396 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
397 |(% style="width:496px" %)(((
398 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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400 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
401
402 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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404
405 For example, if we have a RS485 sensor. The command to get sensor value is: 01 03 0B B8 00 02 46 0A. Where 01 03 0B B8 00 02 is the Modbus command to read the register 0B B8 where stored the sensor value. The 46 0A is the CRC-16/MODBUS which calculate manually.
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407 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
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409
410 (% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
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412 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
413 |(% style="width:510px" %)(((
414 **AT+DATACUTx=a,b,c**
415
416 * **a: length for the return of AT+COMMAND**
417 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
418 * **c: define the position for valid value.  **
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420
421 **Examples:**
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423 * (% style="color:#037691" %)**Grab bytes**
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425 (% aria-label="image-20220602153621-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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428 * (% style="color:#037691" %)**Grab a section**
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430 (% aria-label="image-20220602153621-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-2.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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432
433 * (% style="color:#037691" %)**Grab different sections**
434
435 (% aria-label="image-20220602153621-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-3.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
436
437
438
439 )))
440
441 === 3.3.4 Compose the uplink payload ===
442
443 (((
444 Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
445
446
447 )))
448
449 (((
450 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
451
452
453 )))
454
455 (((
456 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
457 )))
458
459 (((
460 Final Payload is
461 )))
462
463 (((
464 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
465 )))
466
467 (((
468 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
469 )))
470
471 (% aria-label="1653269759169-150.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653269759169-150.png||data-widget="image" height="513" width="716"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
472
473
474 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
475
476
477 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
478
479 Final Payload is
480
481 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
482
483
484 1. PAYVER: Defined by AT+PAYVER
485 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
486 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
487 1. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
488
489 (% aria-label="image-20220602155039-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602155039-4.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
490
491
492 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
493
494 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
495
496 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
497
498 DATA3=the rest of Valid value of RETURN10= **30**
499
500
501 (% style="color:red" %)Notice: In firmware v1.3, the Max bytes has been changed according to the max bytes in different Frequency Bands for lowest SF. As below:
502
503 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
504
505 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
506
507 * For US915 band, max 11 bytes for each uplink.
508
509 ~* For all other bands: max 51 bytes for each uplink.
510
511
512 Below are the uplink payloads:
513
514 (% aria-label="1654157178836-407.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157178836-407.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
515
516
517
518 === 3.3.5 Uplink on demand ===
519
520 Except uplink periodically, RS485-LN is able to uplink on demand. The server send downlink command to RS485-LN and RS485 will uplink data base on the command.
521
522 Downlink control command:
523
524 **0x08 command**: Poll an uplink with current command set in RS485-LN.
525
526 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
527
528
529
530 === 3.3.6 Uplink on Interrupt ===
531
532 RS485-LN support external Interrupt uplink since hardware v1.2 release.
533
534 (% aria-label="1654157342174-798.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157342174-798.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
535
536 Connect the Interrupt pin to RS485-LN INT port and connect the GND pin to V- port. When there is a high voltage (Max 24v) on INT pin. Device will send an uplink packet.
537
538
539 == 3.4 Uplink Payload ==
540
541
542 (% aria-label="image-20220606110929-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220606110929-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
543
544 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
545
546
547 == 3.5 Configure RS485-LN via AT or Downlink ==
548
549 (((
550 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
551 )))
552
553 (((
554 There are two kinds of Commands:
555 )))
556
557 * (((
558 (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
559 )))
560
561 * (((
562 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
563 )))
564
565 (((
566
567 )))
568
569
570 === 3.5.1 Common Commands ===
571
572 They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
573
574
575 === 3.5.2 Sensor related commands ===
576
577 Response feature is added to the server's downlink, a special package with a FPort of 200 will be uploaded immediately after receiving the data sent by the server.
578
579 (% aria-label="image-20220602163333-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602163333-5.png||data-widget="image" height="263" width="1160"]](% style="background:url(~"http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
580
581 The first byte of this package represents whether the configuration is successful, 00 represents failure, 01 represents success. Except for the first byte, the other is the previous downlink. (All commands except A8 type commands are applicable)
582
583
584
585 === 3.5.3 Sensor related commands ===
586
587
588
589
590 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
591
592 (((
593 This command is used to configure the RS485 devices; they won’t be used during sampling.
594 )))
595
596 * (((
597 (% style="color:#037691" %)**AT Command**
598
599 (((
600 **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**  m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
601 )))
602 )))
603
604 (((
605
606 )))
607
608 * (((
609 (% style="color:#037691" %)**Downlink Payload**
610 )))
611
612 (((
613 Format: A8 MM NN XX XX XX XX YY
614 )))
615
616 (((
617 Where:
618 )))
619
620 * (((
621 MM: 1: add CRC-16/MODBUS ; 0: no CRC
622 )))
623 * (((
624 NN: The length of RS485 command
625 )))
626 * (((
627 XX XX XX XX: RS485 command total NN bytes
628 )))
629 * (((
630 (((
631 YY: How many bytes will be uplink from the return of this RS485 command,
632 )))
633
634 * (((
635 if YY=0, RS485-LN will execute the downlink command without uplink;
636 )))
637 * (((
638 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
639 )))
640 * (((
641 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
642 )))
643 )))
644
645 (((
646
647
648 **Example 1**  ~-~-> Configure without ask for uplink (YY=0)
649 )))
650
651 (((
652 To connect a Modbus Alarm with below commands.
653 )))
654
655 * (((
656 The command to active alarm is: 0A 05 00 04 00 01 4C B0. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
657 )))
658
659 * (((
660 The command to deactivate alarm is: 0A 05 00 04 00 00 8D 70. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
661 )))
662
663 (((
664
665
666 So if user want to use downlink command to control to RS485 Alarm, he can use:
667 )))
668
669 (((
670 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
671 )))
672
673 (((
674 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
675 )))
676
677 (((
678 A8 is type code and 01 means add CRC-16/MODBUS at the end, the 3^^rd^^ byte is 06, means the next 6 bytes are the command to be sent to the RS485 network, the final byte 00 means this command don’t need to acquire output.
679 )))
680
681 (((
682
683 )))
684
685 (((
686 **Example 2**  ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
687 )))
688
689 (((
690 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
691 )))
692
693 (((
694
695 )))
696
697 (((
698 (((
699 RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:  **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
700 )))
701
702
703 )))
704
705 (((
706 (% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
707 )))
708
709
710
711
712 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
713
714 (((
715 This is the first byte of the uplink payload. RS485-LN can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
716 )))
717
718 * (((
719 (% style="color:#037691" %)**AT Command:**
720
721 **AT+PAYVER:    **Set PAYVER field = 1
722
723
724 )))
725 * (((
726 (% style="color:#037691" %)**Downlink Payload:**
727 )))
728
729 (((
730 **0xAE 01**  ~-~->  Set PAYVER field =  0x01
731 )))
732
733 (((
734 **0xAE 0F**   ~-~->  Set PAYVER field =  0x0F
735 )))
736
737
738
739
740 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
741
742 (((
743 AT+COMMANDx or AT+DATACUTx
744 )))
745
746 (((
747 These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
748 )))
749
750 (((
751
752 )))
753
754 * (((
755 (% style="color:#037691" %)**AT Command:**
756 )))
757
758 **AT+COMMANDx:    **Configure RS485 read command to sensor.
759
760 **AT+DATACUTx:        **Configure how to handle return from RS485 devices.
761
762
763 * (((
764 (% style="color:#037691" %)**Downlink Payload:**
765 )))
766
767 (((
768 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
769 )))
770
771 (((
772 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
773 )))
774
775 (((
776 Format: AF MM NN LL XX XX XX XX YY
777 )))
778
779 (((
780 Where:
781 )))
782
783 * (((
784 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
785 )))
786 * (((
787 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
788 )))
789 * (((
790 LL:  The length of AT+COMMAND or AT+DATACUT command
791 )))
792 * (((
793 XX XX XX XX: AT+COMMAND or AT+DATACUT command
794 )))
795 * (((
796 YY:  If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
797 )))
798
799 (((
800
801
802 **Example:**
803 )))
804
805 (((
806 (% style="color:#037691" %)**AF 03 01 06 0A 05 00 04 00 01 00**(%%): Same as AT+COMMAND3=0A 05 00 04 00 01,1
807 )))
808
809 (((
810 (% style="color:#037691" %)**AF 03 02 06**(% style="color:orange" %)** 10 **(% style="color:red" %)**01 **(% style="color:green" %)**05 06 09 0A**(% style="color:#037691" %)** 00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**16**(%%),(% style="color:red" %)**1**(%%),(% style="color:green" %)**5+6+9+10**
811 )))
812
813 (((
814 (% style="color:#037691" %)**AF 03 02 06 **(% style="color:orange" %)**0B**(% style="color:red" %)** 02 **(% style="color:green" %)**05 07 08 0A **(% style="color:#037691" %)**00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**11**(%%),(% style="color:red" %)**2**(%%),(% style="color:green" %)**5~~7+8~~10**
815 )))
816
817
818
819
820 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
821
822 (((
823 **AT+MBFUN** is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].
824 )))
825
826 (((
827 This command is valid since v1.3 firmware version
828 )))
829
830 (((
831 AT+MBFUN can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
832 )))
833
834 (((
835
836 )))
837
838 (((
839 **Example:**
840 )))
841
842 * (((
843 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
844 )))
845 * (((
846 AT+COMMAND1= 01 03 00 10 00 08,1  ~-~-> read slave address 01 , function code 03, start address 00 01, quantity of registers 00 08.
847 )))
848 * (((
849 AT+COMMAND2= 01 02 00 40 00 10,1  ~-~-> read slave address 01 , function code 02, start address 00 40, quantity of inputs 00 10.
850
851
852 )))
853
854 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]](% title="Click and drag to resize" %)​
855
856 (% aria-label="image-20220602165351-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-7.png||data-widget="image"]](% title="Click and drag to resize" %)​
857
858
859
860
861 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
862
863 (((
864 Some Modbus device has slow action to send replies. This command is used to configure the RS485-LN to use longer time to wait for their action.
865 )))
866
867 (((
868 Default value: 0, range:  0 ~~ 65 seconds
869 )))
870
871 * (((
872 (% style="color:#037691" %)** AT Command:**
873
874 **AT+CMDDLaa=hex(bb cc)*1000**
875 )))
876
877 (((
878
879
880 **Example:**
881 )))
882
883 (((
884 **AT+CMDDL1=1000** to send the open time to 1000ms
885 )))
886
887 (((
888
889 )))
890
891 * (((
892 (% style="color:#037691" %)** Downlink Payload:**
893 )))
894
895 (((
896 **0x AA aa bb cc**
897 )))
898
899 (((
900 Same as: AT+CMDDLaa=hex(bb cc)*1000
901 )))
902
903 (((
904 **Example:**
905 )))
906
907 (((
908 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
909 )))
910
911
912
913
914 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
915
916 (((
917 Define to use one uplink or multiple uplinks for the sampling.
918 )))
919
920 (((
921 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
922
923
924 )))
925
926 * (((
927 (% style="color:#037691" %)** AT Command:**
928 )))
929
930 **AT+DATAUP=0**
931
932 **AT+DATAUP=1**
933
934
935 * (((
936 (% style="color:#037691" %)** Downlink Payload:**
937 )))
938
939 (((
940 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
941 )))
942
943 (((
944 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
945 )))
946
947
948
949
950 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
951
952 (((
953 Ask device to send an uplink immediately.
954 )))
955
956 * (((
957 (% style="color:#037691" %)** AT Command:**
958 )))
959
960 (((
961 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
962 )))
963
964 (((
965
966 )))
967
968 * (((
969 (% style="color:#037691" %)** Downlink Payload:**
970 )))
971
972 (((
973 **0x08 FF**, RS485-LN will immediately send an uplink.
974 )))
975
976
977
978
979 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
980
981 (((
982 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
983
984
985 )))
986
987 * (((
988 (% style="color:#037691" %)** AT Command:**
989 )))
990
991 (((
992 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
993 )))
994
995 (((
996 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
997 )))
998
999 (((
1000 Example screen shot after clear all RS485 commands. 
1001 )))
1002
1003 (((
1004
1005 )))
1006
1007 (((
1008 The uplink screen shot is:
1009 )))
1010
1011 (% aria-label="1654160691922-496.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654160691922-496.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1012
1013
1014 * (((
1015 (% style="color:#037691" %)** Downlink Payload:**
1016 )))
1017
1018 (((
1019 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1020 )))
1021
1022
1023
1024
1025 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1026
1027 (((
1028 Set the Rs485 serial communication parameters:
1029 )))
1030
1031 * (((
1032 (% style="color:#037691" %)** AT Command:**
1033 )))
1034
1035 (((
1036
1037
1038 * Set Baud Rate
1039 )))
1040
1041 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1042
1043
1044 (((
1045 * Set UART Parity
1046 )))
1047
1048 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1049
1050
1051 (((
1052 * Set STOPBIT
1053 )))
1054
1055 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1056
1057
1058
1059 * (((
1060 (% style="color:#037691" %)** Downlink Payload:**
1061 )))
1062
1063 (((
1064 **A7 01 aa bb**:  Same  AT+BAUDR=hex(aa bb)*100
1065 )))
1066
1067 (((
1068 **Example:**
1069 )))
1070
1071 * (((
1072 A7 01 00 60   same as AT+BAUDR=9600
1073 )))
1074 * (((
1075 A7 01 04 80  same as AT+BAUDR=115200
1076 )))
1077
1078 (((
1079 A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1080 )))
1081
1082 (((
1083 A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1084 )))
1085
1086
1087
1088
1089 == 3.6 Listening mode for RS485 network ==
1090
1091 (((
1092 This feature support since firmware v1.4
1093 )))
1094
1095 (((
1096 RS485-LN supports listening mode, it can listen the RS485 network packets and send them via LoRaWAN uplink. Below is the structure. The blue arrow shows the RS485 network packets to RS485-LN.
1097 )))
1098
1099 (% aria-label="image-20220602171200-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-8.png||data-widget="image" height="567" width="1007"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1100
1101 (((
1102 To enable the listening mode, use can run the command AT+RXMODE.
1103 )))
1104
1105 (((
1106
1107 )))
1108
1109 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1110 |=(% style="width: 100px;" %)(((
1111 **Command example**
1112 )))|=(% style="width: 400px;" %)(((
1113 **Function**
1114 )))
1115 |(% style="width:100px" %)(((
1116 AT+RXMODE=1,10
1117 )))|(% style="width:400px" %)(((
1118 Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
1119 )))
1120 |(% style="width:100px" %)(((
1121 AT+RXMODE=2,500
1122 )))|(% style="width:400px" %)(((
1123 Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
1124 )))
1125 |(% style="width:100px" %)(((
1126 AT+RXMODE=0,0
1127 )))|(% style="width:400px" %)(((
1128 Disable listening mode. This is the default settings.
1129 )))
1130 |(% style="width:100px" %)(((
1131
1132 )))|(% style="width:400px" %)(((
1133 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1134 )))
1135
1136 (((
1137 (% style="color:#037691" %)** Downlink Command:**
1138 )))
1139
1140 (((
1141 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1142 )))
1143
1144 (((
1145
1146 )))
1147
1148 (((
1149 **Example**:
1150 )))
1151
1152 (((
1153 The RS485-LN is set to AT+RXMODE=2,1000
1154 )))
1155
1156 (((
1157 There is a two Modbus commands in the RS485 network as below:
1158 )))
1159
1160 (((
1161 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1162 )))
1163
1164 (((
1165 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1166 )))
1167
1168 (((
1169 RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b  (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1170 )))
1171
1172 (((
1173 (% aria-label="image-20220602171200-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-9.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1174 )))
1175
1176 (((
1177
1178 )))
1179
1180 (((
1181 (((
1182 (% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
1183 )))
1184 )))
1185
1186
1187 == 3.7 Buttons ==
1188
1189
1190 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1191 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1192 |(% style="width:50px" %)**ACT**|(% style="width:361px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1193 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1194 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1195
1196 == 3.8 LEDs ==
1197
1198
1199 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1200 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1201 |**PWR**|Always on if there is power
1202 |**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN**(%%) for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds** (%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
1203
1204 = 4. Case Study =
1205
1206 User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
1207
1208
1209 = 5. Use AT Command =
1210
1211 == 5.1 Access AT Command ==
1212
1213 (((
1214 RS485-LN supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-LN to use AT command, as below.
1215 )))
1216
1217 (% aria-label="1654162355560-817.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162355560-817.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1218
1219
1220 (((
1221 In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-LN. The default password is 123456. Below is the output for reference:
1222 )))
1223
1224 (% aria-label="1654162368066-342.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162368066-342.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1225
1226
1227 (((
1228 More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1229 )))
1230
1231
1232
1233 == 5.2 Common AT Command Sequence ==
1234
1235
1236 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1237
1238 If device has not joined network yet:
1239
1240 * (% style="color:#037691" %)**AT+FDR**
1241 * (% style="color:#037691" %)**AT+NJM=0**
1242 * (% style="color:#037691" %)**ATZ**
1243
1244 (((
1245
1246
1247 If device already joined network:
1248
1249 * (% style="color:#037691" %)**AT+NJM=0**
1250 * (% style="color:#037691" %)**ATZ**
1251
1252
1253 )))
1254
1255
1256 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1257
1258
1259 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1260
1261 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1262
1263 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1264
1265 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1266
1267 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1268
1269 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1270
1271 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1272
1273 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1274
1275 (% style="background-color:#dcdcdc" %)**AT+DADDR=26** (%%) 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1276
1277 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1278
1279
1280 (% style="color:red" %)**Note:**
1281
1282 (((
1283 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1284 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1285 3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1286 4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1287 )))
1288
1289 (% aria-label="1654162478620-421.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162478620-421.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1290
1291
1292 = 6. FAQ =
1293
1294 == 6.1 How to upgrade the image? ==
1295
1296 (((
1297 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1298 )))
1299
1300 * (((
1301 Support new features
1302 )))
1303 * (((
1304 For bug fix
1305 )))
1306 * (((
1307 Change LoRaWAN bands.
1308 )))
1309
1310 (((
1311 Below shows the hardware connection for how to upload an image to RS485-LN:
1312 )))
1313
1314 (% aria-label="1654162535040-878.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162535040-878.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1315
1316 (((
1317 (% style="color:blue" %)**Step1**(%%)**:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1318 )))
1319
1320 (((
1321 (% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1322 )))
1323
1324 (((
1325 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1326 )))
1327
1328 (((
1329 (((
1330 (((
1331 (% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
1332 )))
1333 )))
1334 )))
1335
1336
1337 (% aria-label="image-20220602175818-12.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175818-12.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1338
1339
1340 (% aria-label="image-20220602175848-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175848-13.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1341
1342
1343 (% aria-label="image-20220602175912-14.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175912-14.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1344
1345
1346 (% style="color:red" %)**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1347
1348 (% aria-label="image-20220602175638-10.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175638-10.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1349
1350
1351 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1352
1353 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1354
1355
1356 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1357
1358 The RS485-LN can support max 32 RS485 devices. Each uplink command of RS485-LN can support max 16 different RS485 command. So RS485-LN can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
1359
1360
1361 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1362
1363 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1364
1365 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1366
1367
1368 = 7. Trouble Shooting =
1369
1370 == 7.1 Downlink doesn’t work, how to solve it? ==
1371
1372 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1373
1374
1375 == 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1376
1377 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1378
1379
1380 = 8. Order Info =
1381
1382 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1383
1384 (% style="color:blue" %)**XXX:**
1385
1386 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1387 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1388 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1389 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1390 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1391 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1392 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1393 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1394 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1395 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1396
1397 = 9.Packing Info =
1398
1399
1400 **Package Includes**:
1401
1402 * RS485-LN x 1
1403 * Stick Antenna for LoRa RF part x 1
1404 * Program cable x 1
1405
1406 **Dimension and weight**:
1407
1408 * Device Size: 13.5 x 7 x 3 cm
1409 * Device Weight: 105g
1410 * Package Size / pcs : 14.5 x 8 x 5 cm
1411 * Weight / pcs : 170g
1412
1413 = 10. FCC Caution for RS485LN-US915 =
1414
1415 (((
1416 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1417 )))
1418
1419 (((
1420 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
1421 )))
1422
1423 (((
1424
1425 )))
1426
1427 (((
1428 (% style="color:red" %)**IMPORTANT NOTE:**
1429 )))
1430
1431 (((
1432 **Note: **This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
1433 )))
1434
1435 (((
1436 —Reorient or relocate the receiving antenna.
1437 )))
1438
1439 (((
1440 —Increase the separation between the equipment and receiver.
1441 )))
1442
1443 (((
1444 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1445 )))
1446
1447 (((
1448 —Consult the dealer or an experienced radio/TV technician for help.
1449 )))
1450
1451 (((
1452
1453 )))
1454
1455 (((
1456 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1457 )))
1458
1459 (((
1460 This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
1461 )))
1462
1463
1464 = 11. Support =
1465
1466 * (((
1467 Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1468 )))
1469 * (((
1470 Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
1471 )))

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